• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Fuel out the exhaust #3 cylinder

  • Thread starter Thread starter Mark Crystal
  • Start date Start date
hjfisk said:
Is it just me or did anyone else , catch that this thread was started by a Mark Crystal and ended with a Harshjay jumping in so we have mixed info to work with:confused:
Click to expand...
Hey, we have a 3rd now, BigGreen. Perhaps we can kill 3 petcocks with one thread. ;);)
 
I disconnected the petcock vacuum and took the carbs apart again and made sure everything was properly measured. Now the third exhaust pipe is cooler than the rest like its not firing. And there’s smoke out the exhaust sometimes. And I believe there’s now fuel in the oil. Maybe from flooding when the petcock vacuum was on and the fuel was entering from there. But the bike does run tons better since redoing the carb. Compression is good on all cylinders; the #3 is a little lower but not much. Any guesses? lol Never smoked this much before. :(
 
Guesses??? why, that's what some of us do everyday! You disconnected petcock vac line and plugged it ( so #3 carb isn't sucking air thru that fitting),right and you're not leaving your petcock on "PR" spot when it ain't running, right???? Unless you change oil, it will take a while of smoking to clear gas out of crankcase oil
 
If #3 is still running cold, check for spark on that cly. If no spark or weak spark, unscrew the cap, cut about 1/4" off the wire and screw the cap back on and recheck. Do not forget to look into the cap and check the connections there which can be cleaned with vinager. Do one..do em all.
V
 
No I didn't plug that vacuum line! on the carb. :o Ill try that and clean the caps with vinegar. Change the oil and see what happens!
 
Seems like everything in order but when I drive it, no smoke, but when I stop the bike it pours out gas and oil out the right exhaust. #3 still cold :( 10/40 In it. Maybe something wrong with that carb?
 
Mark Crystal said:
Seems like everything in order but when I drive it, no smoke, but when I stop the bike it pours out gas and oil out the right exhaust. #3 still cold :( 10/40 In it. Maybe something wrong with that carb?
Click to expand...
Just for clarification, "when I stop the bike", does that mean you come to a stop but leave the engine idleing? Or does it mean you stop the engine, also?

And when "it pours out gas and oil out the right exhaust", I'm envisioning a large puddle begins to form on the ground. Do you think it is gas colored black by carbon from the muffler, or does it actually have an oily feel?
And smells like gas?

Has the oil level in the crankcase risen since you changed the oil?

Pull the spark plugs and how does #3 look different compared to the other three?

Do a WET float check on the carbs to see what they are doing while the engine is running.
 
I guess it's gas with carbon because it does dry fast but leave a black residue. It was not doing this before I took the carbs apart and put the jets at factory setting and the top bolts that change the heights for the diaphragms? Yes the oil level has risen since I've done this, and when I stop and idle it does not pour out. Maybe sprays a little out the middle of the exhaust. And smokes, but when I stop it pours with a compression test that cylander is a little lower but not much to make a difference. Ill do a wet float check today
 
All the other plugs look great, bike has a lot of power. #3 is cleaner then the rest, probably from to much fuel. When I took the carbs apart past time, you know there are two holes on top do those go to the vents or vacuum? The top right one looks a little scratched up like someone was digging in there. Is that a possibility that's the culprit?
 
I changed all the innards to carb three to 4 and 4 to three. And still #3 is cold as ice after driving and gas spuing out. Don't know what else to do.
 
Mark Crystal said:
I changed all the innards to carb three to 4 and 4 to three. And still #3 is cold as ice after driving and gas spuing out. Don't know what else to do.
Click to expand...
You can move all the "innards", but you can't move the passages between them.
icon_shrug.gif


It's possible that the pilot circuit passages are plugged, preventing gas from getting through, but the float needle is hung up, allowing raw gas to get dumped down the throat. :eek:



Going back to the beginning of the thread, you say you "cleaned the carbs and used Seafoam".
Please tell us HOW you "cleaned the carbs".
- Did you do a full "strip and dip"?
- How long did you leave them in the dip?
- Did you replace all the o-rings?
- Did you synchronize the carbs (properly)? You made mention of synching them "with the petcock vacuum to #3", so I am questioning many other things that might have been done incorrectly, too.

Have not seen it asked yet, so ... have you adjusted the valves? :-k

.
 
Do what Steve says but before you reinstall the carbs save yourself some time and benchtest the carbs before you reinstall them. Put them on the bench in their normal orientation as when they are on the bike and attach a fuel supply at the height above the carbs as when they are on the bike. Turn on the fuel supply and check for any leaks. In your case you mostly will be checking for major leaks coming out the carb mouth or float bowl overflow tubes. This would also be a good time once you've troubleshot any leaks to do a static float height test with a plastic tube attached where the float bowl drain is. Once all is good then reinstall the carbs. While you have the tank off check the petcock, it should flow lots of fuel out the fuel line in the prime position and none in the on or reserve position. Also use some clear hose as mentioned above to check for fuel coming out the vacuum port on the petcock. Also when you suck hard enough on the vacuum hose, if it's working correctly you get no fuel in the vacuum hose and fuel should flow out the fuel line in the on and/or reserve position. These simply tests done before you put everything together could save you a lot of time frustration.
 
yeah, steve, whenever i see "cold cylinder" i AUTOMATICALLY think valves first.
 
I really aricate the help, I won't be able to work on it till this weekend, ill give an update then thank you so very much
 
My boss let me have an early day, so plenty of time to tinker.
 
You must log in or register to reply here.
Back
Top